Vehicle Display Device Flat Surface 3D Design
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Solution Overview
Problem
Conventional illumination plates for vehicles enhance the three-dimensional appearance of characters or graphics but increase the risk of damage and hinder occupant access due to projection beyond the substrate surface, causing contact issues.
Innovation Solution
A display device with a transparent plate-shaped substrate, a planar light-emitting body on the back surface, and light-shielding regions on both the substrate and a light-shielding plate, allowing for a three-dimensional design without projecting the front surface, using recessed light-shielding layers to enhance aesthetic appeal both day and night while preventing foreign object contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the projection amount of the character-shaped body is increased to enhance three-dimensional appearance, then the outer aesthetic appearance is improved, but the character-shaped body contacts the foot of occupants during boarding and alighting, causing damage and hindering access
Solution Approach 1:
The patent applies dimensionality change by moving the light-shielding character-shaped body from the front surface projection to the back surface of the transparent substrate. The character-shaped body is formed as a light-shielding region on the back surface, and light emitted from the planar light-emitting body passes through gaps between the character-shaped body and the transparent substrate, creating a three-dimensional visual effect without actual front surface projection. This resolves the contradiction by achieving aesthetic three-dimensionality in optical space while maintaining physical flatness for safety.
2Shape
If a light transmission control layer with opening larger than character outline is used to enhance design effect, then the aesthetic appearance is improved, but light leaks from gaps causing unwanted illumination
Solution Approach 1:
The patent applies local quality by creating a precise fit between the light-shielding character-shaped body and the transparent substrate, with the character-shaped body's outline matching the substrate's opening. This eliminates gaps that would cause light leakage while maintaining the desired light transmission control effect. The light-shielding property is locally applied only where needed (at the character boundaries) rather than uniformly across the entire structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution maintains a flat front surface, prevents damage from foreign objects, and enhances the three-dimensional appearance of the design part by allowing it to be visible both day and night, while ensuring safe and unobstructed access.
Implementation Method 1
a first light-shielding layer blocking light from the planar light-emitting body is formed in the first light-shielding region, and a second light-shielding layer blocking light from the planar light-emitting body is formed in the second light-shielding region
Data Source
AI summary
A display device includes: a transparent plate-shaped substrate capable of blocking light transmission in its partial region; a planar light-emitting body disposed on a back surface side of the substrate; a light-shielding plate capable of blocking light transmission in its partial region and disposed between the substrate and the light-emitting body; and a design part displayed on the substrate, having a predetermined shape formed from a character or graphic. A first light-shielding region formed from a recess with a same shape as an outline of the design part, and a second light-shielding region having a shape enlarged outward from an outline of the recess by a first dimension are respectively provided on the back surface side of the substrate and a front or back surface side of the plate. First and second light-shielding layers blocking light from the light-emitting body are formed in the first and second light-shielding regions, respectively.